Crank-shaft-dressing implement



Oct. 528 1924.

W. N. METCALF CRANK SHAFT DRESSING IMPLEMENT Filed May 8, 1923 a m u m .r a

UNITED earns WILLIAM N. METCALF, OF DE WITT, ARKANSAS.

CRANK-SHAFT-DRESSING IMPLEMENT.

Appflication filed May 8, 1923. Serial No. 637,538.

To all whom it may concern: the flat part; also an expensive operation. Be it known that I, WILLIAM N. METGALF, The present device, intended to overcome a citizen of the United States, residing at these drawbacks, comprises a pair of bars, De lVitt, in the county of Arkansas and 10 and 11, spaced apart by means of adjust- State of Arkansas, have invented certain new ing the bolts, 12, having nuts, 13 and 14, for and useful Improvements in Crank-Shaftadjusting the spacing of the bars, and 11. Dressing Implements, of which the follow- Upon the proximate surfaces of the bars, ing is a specification. 10 and 11, cutting implements, 15 and 16,

This invention relates to crank shaft dressare secured such cutting implements prefer- 10 ing implements and has for an object to ably analogizing tiles and removably secured provide a manually operated device of sim thereto by some appropriate mechanical ple construction which will dress down a means, as the clamps, 17. crank shaft or the like while in position upon At opposite ends, the bars 10 and 11 are the regular installation and insure accuracy provided with appropriate hand-holds, 18

-15 of dressino. and 19, respectively, so that the o erator A further object of the invention is to may grasp either one or both of these handprovide a crank shaft dressing implement holds for actuating the device. In operacomprising spaced and adjustable cutting tion, the bars 10 and 11 and their cutters, 15 tools analogizing files, with means for reand 16, are separated by removing the nuts, ciprocating the device as an entirety for the 14, and are placed upon the shaft, 20, which purpose of actuating the cutters while rcis to be dressed down. The device as an entating the shaft, to insure circular accuracy. tirety is then reciprocated throughout all or Vith these and other objects in view, the a portion of the effective lengthof the eutinvention comprises certain novel parts, eleters, 15 and 16, and simultaneously turned inents, units, combinations, interactions and or, as convenience may make desirable. the

functions as disclosed in the drawings, toshaft is turned relative to the reciprocating gether with mechanical equivalents thereof, plane of the organization. By adjusting the as will be hereinafter more fully described parts so that the cutters, 15 and 16, shall be and claimed. spaced accurately relative to the smallest so In the drawings: diameter of the shaft as indicated at Figure 0 Figure 1 is a view of the device in per 2 and by such continued reciprocation and spective in operative position upon a crank turning, the parts of greater diameter will shaft. be dressed down to correspond to the parts Figure 2 is aview of the device in side of lesser diameter, producing a cylindrical 35 elevation, showing the relative rotation of effect. This may be easily and readily acthe implement relative to the shaft for dresscomplished while the shaft is still in situ and ing purposes. at a great saving in expense over removing Like characters of reference indicate corthe shaft from the organization and turning responding parts throughout the several or otherwise dressing. 40 views. I claim:

It is well known that in the operation of A shaft dressing implement comprising various mechanical devices employing shafts side bars, means to adjust the relation of and, more especially, crank shafts said shafts the bars in parallelism, spaced clamps slidbecome worn to depart from true circularity. able upon the bars, and cutters having their 45 It is desirable to dress down the shaft to reopposite ends engaged by the clamps and turn the shaft to circular condition, to insure clamped rigidly thereby relative to the side smooth running of the parts. It is oftenbars. times impractical to remove the shaft from In testimony whereof I afix my signature. the installation and insert it in a lathe or 50 other mechanical device for dressing down WILLIAM N. METGALF. 

